RIVSRegistro Italiano Veicoli Storici (Italian: Italian Registry of Historic Vehicles)
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We randomly selected 25 of these patients and then randomly assigned each of the 25 patients to one of four subgroups; we then computed the RIV. We repeated the random assignment to the subgroups and RIV computation ten times.
With only 25 patients the average RIV that results from four randomly assigned subgroups is 13.2 percent.
Although scuppered on this occasion, the Unimog RIV is a genuine all-terrain performer.
Once extricated later in the day, the not quite so shiny Unimog RIV impressed as it was put through its paces before being taken on a tour of UK regional airports.
* The conventional F-statistic is a test for the significance of reported RIVs.
In particular, one might ask why the mean reduction in variance (RIV) of costs declines with the pattern that is exhibited by his simulation.
Thus, the formula for reduction in variance (RIV) is (3) RIV = (SSQ - [SSQ.sub.x] - [SSQ.sub.y])/SSQ.
In my review, I had argued that random splitting of the data cannot produce a negative RIV. This is equivalent to arguing that SSQ - [SSQ.sub.x] - [SSQ.sub.y] [greater than or equal to] 0 (see Equation 3).
The six most important species, based on RIV (in descending order), were Juglans nigra, Populus deltoides, Ulmus americana, Aesculus glabra, Fraxinus pennsylvanica and Acer negundo.
The single most important species was Acer saccharum (RIV = 23.5).
Plainly, the two most important species, based on RIV, were Fraxinus americana (23.1) and Acer saccharum (21.5).
succumb to the Emerald Ash Borer (Agrilus planipennis Fairmaire [Insecta: Family Buprestidae]), it is postulated that the number of trees, and consequently, the RIV, of A.